Micronaut Platform 4.8.0

Micronaut Core Improvements

SourceGen integration

Micronaut Core 4.8.x has rewritten some of its internals leveraging Micronaut SourceGen. For example, Micronaut SourceGen powers bytecode generation of internal metadata and expressions.

Dependency Injection Debugging

Micronaut 4.8.0 allows you to activate dependency injection tracing to help you understand what Micronaut is doing at startup and when a particular bean is created.

@Client definitionType member

definitionType, a new member of the @Client annotation, helps in scenarios where you want to share an interface between client and server.

Bean Mappers Merging

Bean Mappers support merging:

@Introspected
record ChristmasPresent(
    String packagingColor,
    String type,
    Float weight,
    String greetingCard
) {
}

@Introspected
record PresentPackaging(
    Float weight,
    String color
) {
}

@Introspected
record Present(
    Float weight,
    String type
) {
}
public interface ChristmasMappers {
    @Mapping(from = "packaging.color", to = "packagingColor")
    @Mapping(from = "#{packaging.weight + present.weight}", to = "weight")
    @Mapping(from = "#{'Merry christmas'}", to = "greetingCard")
    ChristmasPresent merge(PresentPackaging packaging, Present present);

}

Liveness Probe for Deadlocked Threads

Thanks to a community contribution, Micronaut 4.8.0 ships a new liveness probe that uses the ThreadMXBean to check for deadlocked threads.

Improved Kubernetes Integration

• Micronaut Kubernetes updates to Kubernetes Java Client 22.0.1 and it adds the Micronaut Kubernetes Client OpenAPI module.

The Micronaut Kubernetes Client OpenApi is a Kubernetes client that uses Micronaut Netty HTTP Client and the generated APIs and modules from the OpenApi Spec of the official Java client library for Kubernetes.
Advantages of this client over the official Java client library for Kubernetes:

• No extra dependencies needed (OkHttp, Bouncy Castle, Kotlin, etc.)
• Unified configuration with Micronaut HTTP client
• Support for plugging in filters
• Native Image compatibility

Runtimes

Update to Jetty 12.

Jetty 11 contains an open CVE 2024-6763. That CVE is only addressed in Jetty 12. Because of that, we did a major upgrade of Micronaut Servlet updating to Jetty 12.0.18, Tomcat 11.0.5, and Undertow 2.3.18.Final.

Modules such as io.micronaut.aws:micronaut-function-aws-test, io.micronaut.gcp:micronaut-gcp-function-http-test, io.micronaut.azure:micronaut-azure-function-http-test, and io.micronaut.oraclecloud:micronaut-oraclecloud-function-http-test allow you to test and run during development your serverless HTTP triggered function as if you were using a runtime such as netty. We migrated these modules to use a built-in Java HTTP server instead of relying on a Jetty 11 bridge.

Runtime based on Built-In Java HTTP Server

This release introduces a new Server runtime based on the Built-In Java HTTP Server. It is now possible to have a Micronaut Application leveraging the built-in HTTP Server and HTTP Client available in Java without any extra dependencies.

Tracing, Observation, and Distributed Configuration

Micronaut Tracing updates to OpenTelemetry 1.48.0.

Micronaut Micrometer adds:

• A new module which enables instrumenting data sources for gathering traces and metrics around data source calls: connections, queries and result sets.
• condition, a new member of the @MetricOptions annotation, allows you to define an evaluated expression that can be used to indicate whether the metric should be processed.

Micronaut Discovery Client allows you to create a Consult watch to detect distributed configuration changes.

Build and Source Generation

Micronaut Gradle Plugins

Update the Micronaut Gradle Plugins version to use the latest version (as of this writing 4.5.1)

Generation of Sources from a JSON Schema

• Micronaut JSON Schema integrates with Micronaut Build plugins (Gradle and Maven) to make possible to generate source code from a JSON Schema specification. For example, checkout the JSON Schema Micronaut Gradle Plugin.

Source Generation

• Micronaut SourceGen, a module which exposes a language-neutral API for source code generation, has got a lot of improvements since Micronaut Framework 4.7.0.

Persistence

• Micronaut SQL updates ojdbc to 23.7.0.25.01, MariaDB to 3.5.1, and MySQL Connector to 9.2.0, Hikari to 6.2.1, and Tomcat JDBC to 11.0.5.
• Micronaut Coherence 5.x updates to Coherence 25.03.

Database Migration

• Micronaut Flyway updates to Flyway 10.22.0
• Micronaut Liquibase updates to Liquibase 4.31.1.

Cloud

• Micronaut AWS updates to AWS lambda Events 3.15.0, AWS SDK v1 1.12.782, and AWS SDK v2 2.31.9.
• Micronaut Azure updates to Azure Cosmos 4.67.0, and Azure SDK 1.2.32.
• Micronaut GCP updates to Google Auth Library OAuth2 HTTP 1.33.1, Google Cloud Core 2.53.1, Google Cloud PubSub 1.137.1, and Google Secret Manager 2.59.0.
• Micronaut Oracle Cloud adds a new module to integrate Kubernetes Client with the OKE and OCI Container Engine service, and it updates to OCI SDK 3.60.0.

Reactive Libraries

• Micronaut Reactor updates to Project Reactor bill of materials (BOM) 2024.0.4.
• Micronaut RxJava3 update to RxJava3 3.1.10

Persistence

• Micronaut Redis updates to Lettuce 6.5.5.RELEASE.
• Micronaut Mongo updates to Mongo Java Driver 4.11.5.
• Micronaut R2DBC updates to r2dbc-io-asyncer-mysql to 1.4.0, oracle-r2dbc to 1.3.0, r2dbc-mariadb to 1.3.0, and r2dbc-postgresql to 1.0.7.RELEASE.

Security

• Micronaut Security improves Oracle Cloud Identity Domain OpenID Connect integration and it adds support for the end-session endpoint when using Microsoft login.

Miscellaneous

• Micronaut Test updates to JUnit5 5.11.4, and Mockito 5.15.2.
• Micronaut OpenAPI got a lot of small improvements...

Micronaut Platform 4.7.6

• Micronaut Core 4.7.14
• Micronaut Oracle Cloud 4.3.8

Micronaut Platform 4.7.5

• Core 4.7.13
• Security 4.11.3
• Validation 4.8.1
• Maven Plugin 4.7.2
• Kafka 5.7.1
• Test Resources 2.7.3
• Discovery Client 4.5.2

Micronaut Platform 4.7.4

• Micronaut Core 4.7.11
• Micronaut Serialization 2.12.1
• Micronaut Discovery Client 4.5.1

Micronaut Platform 4.7.3

• Micronaut Core 4.7.10 and 4.7.9
• Micronaut Logging 1.5.1
• Micronaut Flyway 7.6.1
• Micronaut Liquibase 6.6.1
• Micronaut Oracle Cloud 4.3.6, and 4.3.5
• Micronaut Pulsar 2.5.1

Micronaut Platform 4.7.2

• Micronaut Core 4.7.8
• Micronaut GCP 5.8.1
• Micronaut Data 4.10.5
• Micronaut Test 4.6.2
• Micronaut Oracle Cloud 4.3.4

Micronaut Platform 4.7.1

• Micronaut Core 4.7.6
• Micronaut Security 4.11.2
• Micronaut JaxRS 4.7.2
• Micronaut Data 4.10.4
• Micronaut OpenAPI 6.13.2
• Micronaut Micrometer 5.9.3
  Lombok 1.18.36

Micronaut Platform 4.7.0

Core

Micronaut Core contains multiple improvements. To highlight a few, it improves the HTTP Client implementations, the display of circular dependency errors, adds a new API FilterBodyParser, the possibility to disable normalization of property keys in @EachProperty beans, and it adds nicer HTML error pages.

LangChain4J

Micronaut LangChain4J provides integration with Langchain4j.

For example, Micronaut LangChain4J makes easy to inject your favourite language model in your Micronaut beans:

import dev.langchain4j.model.chat.ChatLanguageModel;
import jakarta.inject.Singleton;

@Singleton
class DefaultJokeGenerator implements JokeGenerator {
    private final ChatLanguageModel model;
    DefaultJokeGenerator(ChatLanguageModel model) {
        this.model = model;
    }

    @Override
    public String generateJoke() {
        return model.generate("Tell me a joke about Java?");
    }
}

GraalPy

Micronaut Graal Languages is a collection of components for integration of Graal based dynamic languages with Micronaut Framework.

With Micronaut GraalPy eases exposing Python modules as Java Beans within a Micronaut application. We published two guides:

• Creating your first Micronaut Graalpy Application
• Creating a Micronaut Graalpy application using a python package

Build Plugins

There are new versions of both Maven 4.7.1, and Gradle 4.4.4 Plugins.

Micronaut Security

Micronaut Security adds a new module, Micronaut Security Cross-Site Request Forgery (CSRF) to help you protect your applications against CSRF attacks. CSRF protection is integrated also in Micronaut Views with a CSRF Token View Model Processor, and CSRF hidden field in form generation.

Micrometer

Micronaut Micrometer updates to Micrometer 1.13.6 and it adds new module for Prometheus PushGateway.

Cloud

• Micronaut AWS updates to AWS lambda Events 3.14.0, AWS SDK v1 1.12.777, and AWS SDK v2 2.29.11.
• Micronaut Azure updates to Azure Cosmos 4.64.0, and Azure SDK 1.2.29.
• Micronaut GCP updates to Google Auth Library OAuth2 HTTP 1.29.0, Google Cloud Core 2.47.0, Google Cloud PubSub 1.134.1, and Google Secret Manager 2.53.0.
• Micronaut Oracle Cloud updates to OCI SDK 3.53.0.
• Micronaut Tracing adds the module Micronaut Tracing OpenTelemetry JDBC to create span objects on the every JDBC query, and it updates to OpenTelemetry BOM 1.43.0.

Analytics

• Micronaut ElasticSearch updates to ElasticSearch 8.15.3.
• Micronaut OpenSearch updates to OpenSearch 2.16.0.

Persistence

• Micronaut OpenAPI keeps getting better and better thanks to community contribution.
• Micronaut Data contains multiple improvements. Among others, it includes improvements to pagination and Criteria.
• Micronaut SQL updates ojdbc to 23.5.0.24.07, MariaDB to 3.5.0, and MySQL Connector to 9.1.0, Hikari to 6.0.0, and Tomcat JDBC to 11.0.1. Moreover, it is now possible to disable individual datasources both in JPA and JDBC.
• Micronaut R2DBC updates to r2dbc-io-asyncer-mysql to 1.3.0, r2dbc-mariadb to 1.3.0, and r2dbc-postgresql to 1.0.7.RELEASE.
• Micronaut MongoDB updates to Mongo Java Driver 4.11.4.

Database Migration

• Micronaut Flyway updates to Flyway 10.21.0.Final.

Reactive Libraries

• Micronaut reactor updates to Project Reactor bill of materials (BOM) 2023.0.12.

Misc

• Micronaut Test updates to JUnit5 5.11.3, and Mockito 5.14.2.
• Micronaut Servlet updates to Undertow 2.3.18, Apache Tomcat 10.1.31, and Jetty 11.0.24.
• Micronaut Kubernetes adds a new module micronaut-kubernetes-client-openapi.
• Micronaut Object Storage adds a new API StreamingFileUploadRequest.
• Micronaut Spring updates to Spring Boot 3.3.5 and Spring 6.1.14.
• Micronaut Kafka updates to Apache Kafka 3.8.1.
• Micronaut Neo4J updates to Neo4J Java Driver 5.26.1.
• Micronaut NATS updates to NATS Java Client 2.20.4.
• Micronaut GraphQL updates to GraphQL 22.3, and GraphQL Java Tools 14.0.0.
• Micronaut Multi-tenancy adds support for Tenancy Binding.
• Micronaut JMS updates to activemq-jakarta to 6.1.3, and artemis-jakarta-client to 2.38.0.
• Micronaut Pulsar updates to Pulsar Client 3.3.2
• Micronaut gRPC updates to gRPC 1.68.1
• Micronaut Logging updates to Logback 1.5.12
• Micronaut Cache updates to Infinispan 15.0.10.Final.
• Micronaut Email updates to SendGrid 4.10.3.

Micronaut Platform 4.6.3

• Core 4.6.6
• Security 4.10.2
• Test Resources 2.6.2
• MQTT 3.4.1
• Data 4.9.4
• gRPC 4.7.1
• Oracle Cloud 4.2.1

Micronaut Platform 4.6.2

• Micronaut Core 4.6.5
• Micronaut Data 4.9.3
• Micronaut OpenAPI 6.12.3
• Micronaut SQL 5.8.2
• Micronaut JaxRS 4.6.1
• Micronaut Cache 5.0.1
• Micronaut Views 5.5.1
• Micronaut Security 4.10.1

Full Changelog: v4.6.1...v4.6.2